Activity 5: Teacher Jem asked her students to simplify the given expressions before
Shown were the solutions of Fred and Joana. Who got the correct answer in teh
question? Explain why the other one had the wrong answer.
1. (6r 32
(6r + 3)2
(6r+ 3)
Fred
6r • hr = 36r2
2. 6r. 3 = 18r
3. 3 = 9
6r6r=122
2.6. 3 = 18
3. 3 = 9
36r2 + 18r+ 9
12+ 188 + 9
JOANA
Your Explanation:
2. (2r - 5) (2r +5)
(2r - 5) (2r+5)
pr-5) pr+5)
2r . 2r = 4r
2r . 2r = 4r
2r • 5 10r
2r 5 = 10
-5. 2r = 10
5.5 = 25
-5 . 2r-10r
-5.5 = -25
JOANA
= 4.25
= 4n+20r - 25
Fred
Your Explanation​

x=-2

infinite number of lines, so there is an infinite number of equations.

step-by-step explanation:

there are an infinite number of line that passes through the point (-2,5)

x=-2   is one line that passes through the point

y = 5 is another line that passes through the point

(these two lines are perpendicular to each other).

since the number of   numbers are infinite and the slope is the ratio of two numbers,(change in y over change in x) we can have an infinite number of slopes.     our only condition is that it passes through the point (-2,5)

idk man good luck man

this may not be at all, but i use the same website you're using for school, and if i'm stuck doing one of these i try to look for it on the section.